Variable charge pump circuit with dynamic load

  • US 6,724,241 B1
  • Filed: 01/27/2003
  • Issued: 04/20/2004
  • Est. Priority Date: 10/25/2002
  • Status: Active Grant
First Claim
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1. A charge pump circuit for generating a charge pump voltage having minimal voltage ripples, comprising:

  • a) a pumping circuit comprising one or more stages operable to receive a supply voltage and generate a selected one of a plurality of pump voltages;

    b) a plurality of loads selectively coupleable to an output of the pumping circuit, each load associated with a specific pump voltage; and

    c) a load selector means for selectively coupling a load associated with a specific pump voltage to the output of said pumping circuit.

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